/*******************************************************************************
 * This file is part of blueprint4j www.blueprint4j.org.
 * 
 *     blueprint4j is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU Lesser General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 * 
 *     blueprint4j is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU Lesser General Public License for more details.
 * 
 *     You should have received a copy of the GNU Lesser General Public License
 *     along with blueprint4j. If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package blueprint4j.db;

import java.math.BigDecimal;
import java.sql.ResultSet;
import java.sql.SQLException;

import blueprint4j.utils.BindBigDecimalInterface;
import blueprint4j.utils.BindException;

public class FieldBigDecimal extends Field implements BindBigDecimalInterface {
	private static final long serialVersionUID = 1L;
	private int units;
	private int fraction;
	
	/**
	 * 
	 */
	public FieldBigDecimal(String p_name, int p_field_type,
			String p_description,int units,int fraction, Entity entity) {
		super(p_name, p_field_type, p_description, entity);
		this.setUnits(units);
		this.setFraction(fraction);
		
	}

	public Field newInstance(Entity entity) {
		return new FieldBigDecimal(getName(), getFieldType(), getDescription(),
				getUnits(),getFraction(),entity);
	}

	/**
	 * Set Value field type bigdecimal, retrieved from ResultSet
	 */
	protected void setFieldValue(ResultSet result_set) throws DataException {
		try {
			String result_string=result_set.getString(getName());
			if (result_string==null) {
				setObject(null);
			} else {
				setObject(new BigDecimal(result_string));
			}

		} catch (SQLException se) {
			throw new DataException("Can not retrieve '" + getName()
					+ "' because " + se.getMessage());
		};
	}

	public void set(BigDecimal value) {
		setObject(value);
	}

	public BigDecimal get() {
		return (BigDecimal) getObject();
	}

	public String toString() {
		if (getObject() == null) {
			return null;
		}
		return getObject().toString();
	}

	/**
	 * Return data in a suitable SQL format
	 */
	public String getSQLValue() throws DataException {
		if (getObject() == null) {
			return "null";
		}
		return get().toString();
	}

	/**
	 * An overloaded equals method that only accepts big decimal
	 */
	public boolean equals(BigDecimal value) {
		return get().equals(value);
	}

	public Object getPreparedStatementObject() throws DataException {
		return getObject();
	}

	public void setSerializable(String value) throws BindException {
		if ("null".equalsIgnoreCase("" + value)) {
			setObject(null);
		} else {
			setObject(new BigDecimal(value));
		}
	}

	public void setUnits(int units) {
		this.units = units;
	}

	public int getUnits() {
		return units;
	}

	public void setFraction(int fraction) {
		this.fraction = fraction;
	}

	public int getFraction() {
		return fraction;
	}

}
